Mica powder is commonly used in resin casting for its variety of vibrant colors and shimmer which can yield some very neat and interesting results. It also acts as a pigment for dyeing the resin and is a lot of fun to experiment with to see what sort of results you can achieve.

Mica is a natural stone with a vitreous to pearly luster, which forms in multiple distinct layers. Mica is actually a broad term that is attributed to more than 34 types of these layers. The most common form of mica is called muscovite, while other varieties include anandite, fuchsite and lepidolite. While mica has been found in various places around the world throughout history, it wasn’t until the 19th century the gem was given its name and was mined for export. This stone is often ground up and used as a shimmering powder accent in jewelry and accessories, but mica is also used in makeup foundations, cement filler and an insulator in electrical cables.